ANSWER
c. -6, -2, 0, 4
EXPLANATION
We want to find the group of numbers that are ordered from least to greatest.
Positive numbers occur such that the larger a positive number, the greater its value. On the other hand, for negative numbers, the larger the number(in front of the sign), the less the value.
So we have that:
6 > 4
but
-6 < -4
Therefore, knowing this, the group that is ordered from least to greatest is:
-6, -2, 0, 4
